Zz 572
This came up before, and it looks like the price is out. Check this out:
http://www.paceparts.com/product.asp?3=180219 Just some info. RJ |
I have been thinking about this motor since I first heard of it several months ago. The problems I see with it are that it is not a marine motor. You have to pay for a carb and distributor you can't use.. If you have salt water in the motor, you can't use the head gaskets at all. I would be leary about the heads themselves unless you can flush it out everytime you use it. The other question I have is regarding the cam profile. The listing says 632/632 lift, 254/264 duration @ .050 but what about the lobe seperation and centerline? I have a friend who works at a GM dealer, I just talked to him today about attemtping to find out more information. I will post it when and if I get it..
What do you guys think? |
the information states it will be available as a short block assembly. so that elimanates the heads, carb and headgasket issues, the cam easily changed at this phase. i to have been watch and waiting i work at a gm dealer and have been inquiring for months. not alot of information yet
later |
Later,
I have not seen anything regarding a short block 572. Do you have a GM part # or any other information? |
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It's probably the best thing that came out of GMPP in a long time, but at $12K+tax and shipping...you could build much better for the same or little more.
The block is already at .060 over...Whats up with that? Thats 6-7 seasons or 2 rebuilds off its service life. And the power output is not all that much... remember that it has to be spun at about 5400 for marine useage with a reversion free hyd roller cam...add $ there. Don't get me wrong its not that im flaming this motor its just not for powerboats. Specs, Horsepower 620 @ 5500 RPM Torque 650 Ft. Lbs. @ 4500 RPM Max. Recommended RPM 6000 RPM Compression Ratio 9.6:1 Block New! Sportsman Tall Deck Bowtie Gen VI 10.200" deck height Bore 4.560" Stroke 4.375" Crankshaft Forged 4340 steel Connecting Rods Forged 4340 steel, H-beam style, Shot peened Pistons Forged aluminum, Full floating wrist pin Piston Rings Plasma-moly rings Camshaft Hydraulic roller Valve lift: .632" I, .632" E Duration @ .050" 254Ί I, 264Ί E Lifters Hydraulic roller tappet Cylinder Heads Aluminum rectangular port 118cc combustion chamber Intake Valves 2.25" Stainless steel Exhaust Valves 1.88" Stainless steel Valve Springs Dual valve springs 1.540" coil diameter 1.800" installed height 197 Lbs. seat pressure Spring Retainers Hardened chromemoly steel Rocker Arms Aluminum roller rockers, 1.7:1 ratio Push Rods High performance one piece Intake Manifold New! Aluminum tall deck single plane 4150 series carburetor Carburetor 850cfm, mechanical secondary Rear Main Seal New! One-piece design Windage Tray New! Screened and louvered Damper High RPM torsional damper Distributor H.E.I. Ignition Timing 36Ί total advance Spark Plugs R42XLS Fuel 92 Octane |
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I bet the cam is this one. Crane
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I's like to see this as a short block..............I think that adding the right heads / cam / intake, you could get up to 700 HP, naturally aspirated.
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pace parts show the part #'s at
complete deluxe motor #12498793 long block #12498792 partial #12499190 at this time those are not good part #'s ive already checked. the last i heard they were still in the testing stage with the motors that was a couple months ago. but this is the first time ive seen Part #'s so ill be check it out from time to time. Back4more i agree with you that you could have one built for that money, i can buy for cost and thats what im looking at. later |
A short block without a camshaft would be the hot setup! GM could sell alot of them.
Except for the camshaft, I like the long block engine for marine use. If only I could afford to lay out the cash and not feel guilty about it! |
Go to racingjunk.com and see the classifieds for engines and components. There are a lot of top notch parts that can be had for $12,000.00. probably $4500.00 for a short block, $3000.00 for CNC heads, $800.00 for roller cma, $350 for intake, $400 oil pan, $500 for pushrods and misc. and you still have $3000.00 left over. someone would probably assemble this and test it for $1000.00. Use the extra money to buy some good exhaust and you'll run away and hide from the GM motor with the extra 100 hp. I know exactly about a setup like this, with Canfield 310 heads the motor made 755 hp@5800, at 9.5:1, torque was amazing from 3000 up. As a matter of fact that motor is for sale with headers, intake to pan for $16,500.00 including a set of GIL big guns, all billet 4340, dyno time only. Boat was sold before installation.
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